Added some missed navbar icons, and adjusted for last version

[arturmamedov]

added !important also after all content: ''; override, cause for me on elfinder v2.1.10 it not shown

[lokothodida]

Thanks for contributing to the project! Please excuse me for getting back to you so late on this - I haven't properly looked at my old repositories in a while. I've only got concerns with one icon. Once that is fixed, it is changed, build the project (npm run build), commit the built css file and I'll be happy to merge your changes in 👍

[arturmamedov]

@lokothodida okay man, i build less file's to theme.css, i see that not only my changes wasn't yet builded but is all okay, i test the theme and it work fine!

But for me, maybe because i add CSS file simply in head tag and not with elFinder import, i must to add !important for all icons

[arturmamedov]

Also for me i encrease the icon size in grid view, if u like it i can add this change to.

Now

After

This is for another PR if u want, and also the thumbnails are hidden in your version, i can make a PR for correct this thing: